35
The starter motor turns the engine too slowly:
Battery capacity to low
Bad electrical connection
Fault in starter motor
Wrong grade of lubrication
The engine does not start or difficult to start:
Starter motor turns engine too showly
Fuel tank empty
Fault in fuel control solenoid
Restriction in a fuel pipe
Fault in fuel lift pump
Dirty fuel filter element
Air in fuel system
Fault in atomsers
Cold start systems used incorrectly
Fault in cold start system
14. ENGINE TROUBLESHOOTING
Restriction in fuel tank vent
Wrong type or grade of fuel used
Restriction in exhaust pipe
Not enough power:
Restriction in a fuel pipe
Fault in fuel lift pump
Dirty fuel filter element
Air in fuel system
Restriction air filter/cleaner or induction system
Fault in atomisers or atomisers of an incorrect type
Restriction in exhaust pipe
Restriction in fuel tank vent
Wrong type or grade of fuel used
Restricted movement of engine speed control
Engine temperature is too high or low
Misfire:
Restriction in a fuel pipe
Fault in fuel lift pump
Dirty fuel filter element
Air in fuel system
Fault in atomisers or atomisers of an incorrect type
The pressure of the lubriation oil is too low:
Wrong grade of lubrication
Not enough lubrication oil in sump
Defective gauge
Dirty lubrication oil filter element
High fuel consumption:
Restriction air filter/cleaner or induction system
Fault in atomisers or atomisers of an incorrect type
Fault in cold start system
Wrong type or grade of fuel used
Restricted movement of engine speed control
Restriction in exhaust pipe
Engine temperature is too low
Incorrect valva tip clearances
Black exhaust smoke:
Restriction air filter/cleaner or induction system
Fault in atomisers or atomisers of an incorrect type
Fault in cold start system
Wrong type or grade of fuel used
Restriction in exhaust pipe
Engine temperature is too low
Incorrect valva tip clearances
Engine over load
Blue or white exhaust smoke:
Wrong grade of lubrication
Fault in cold start system
Engine temperature is too low
The engine knocks:
Fault in fuel lift pump
Fault in atomisers or atomisers of an incorrect type
Wrong type or grade of fuel used
Fault in cold start system
Engine temperature is too high
Incorrect valve tip clearances
The engine runs erractically:
Fault in fuel control
Restriction in a fuel system
Fault in fuel lift pump
Dirty fuel filter element
Restriction air filter/cleaner or induction system
Air in fuel system
Fault in atomisers or atomisers of an incorrect type
Fault in cold start system
Restriction in fuel tank vent
Restricted movement of engine speed control
Engine temperature is too high
Incorrect valve tip clearances
Vibration:
Fault in atomisers or atomisers of an incorrect type
Restricted movement of engine speed control
Engine temperature is too high
Fan damaged
Fault in engine mounting or flywheel housing
The pressure of the lubrication oil is too high:
Wrong grade of lubrication oil
Defective gauge
The engine temperature is too high:
Restriction air filter/cleaner or induction system
Fault in atomisers or atomisers of an incorrect type
Fault in cold start system
Restriction in exhaust pipe
Fan damaged
Too much lubrication oil in sump
Restriction in air or water passages of radiator
Insufficiant coolant system
Crankcase pressure:
Restriction in breather pipe
Vacuum pipe leaks or fault in exhauster
Bad compression:
Restriction air filter/cleaner or induction system
Incorrect valve tip clearances
The engine starts and stops:
Dirty fuel filter element
Restriction air filter/cleaner or induction system
Air in fuel system
The engine shuts down after approximately
15 seconds:
Badconnection towards oil pressure switch/coolant
temperature switch
